Perhaps you should try some spelling variations:
22quality control » quality control, _quality control, byquality control
2c reliability » 2 reliability, 24 reliability, ic reliability
2c safety » 2 safety, 23 safety, 21 safety
25 safety » 5 safety, 2 safety, 15 safety
22 safety » 2 safety, 12 safety, _ safety
a safety » _ safety
safety » samety
safe » same

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: %22quality control%2c reliability%((((((2c safety) OR (25 safety))) OR (22 safety))) OR (((a safety) OR (a safe)))) AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22quality control%2c reliability%((((((2c safety) OR (25 safety))) or (22 safety))) or (((a safety) or (a safe)))) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %22quality control%2c reliability%((((((2c safety) OR (25 safety))) or (22 safety))) or (((a safety) or (a safe)))) and risk%22*.